材料科学与工程基础1.pptx

Fundamentals of materials science and engineering;Chapter 1;;outline;1-1 What is Materials Science and Engineering?;▲The term Composition ;Figure Application of the tetrahedron of materials science and engineering to sheet steels for automotive chassis. Note that the microstructure-synthesis and processing-composition are all interconnected and affect the performance-to-cost ratio;Figure Application of the tetrahedron of materials science and engineering to semiconducting polymers for microelectronics. ;Synthesis and processing How can pure, homogeneous, and fine powders of well-defined stoichiometry be made? How do we make long lengths of wires?;2. Materials Science;;1-2 Classification Of Materials;Classification Properties Application Metals good electrical and thermal conductivity automobile engine (steels, aluminum, relatively high strength, stiffness, aircraft, electrical magnesium) ductivity, formability conductor wire Ceramics high melting point, strength, hardness house computer chip (Si , SiO2 ,Al2O3 , capacitors, electrical insulation ,MgO ,SiC ,Si3N4 ) sanitaryware, abrasive Polymers electrical resistivity, thermal insulation, food packaging low strength liquid crystal displays